Originally Posted by ekool
MB has the 4Matic AWD system (I believe it is used on the SLR McLaren) -- so it has plenty of beef

There ya go. They can definitely raid the parts bin.
If they decided to do that, I bet they'd wait a year before adding it as an option. Release the intial car and really aim it at the purists. Try not to piss off some of the hardcore purchasing base.
Then bring it in later when they really start developing the car for some different race circuits. Could be very, very cool.